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Fig. 3. Element specification window.

Enter the following data for the element under the indicated tabs:

1. Geometry tab

In the frame Linear dimensions along coordinate axes (nm) , enter:

Length Lu = 1000

Width Lv = 500

Thickness Lw = 200

2. Electromagnetic tab

Magnet type : Select Non-Magnet from drop-down list

3. Lines and Colors tab

Select the Element outline option and click the Color button. In the Color dialog select a dark color (such as dark brown) and exit the dialog by pressing the OK button.

With above specifications, a new non-magnetic element with the linear dimensions nm will be created. Its outline when drawn will be displayed in the color that was specified under the Lines and Colors tab. In this tab one may also specify the thickness of the line with which the element's outline is drawn, and the color and line thickness for magnetization vector's arrow.

Press the OK button to quit the Element Specification dialog and complete the creation of the new element.

The new component is displayed at the system-display pane of the System view window (Fig. 4). At the Design Manager box, a new highlighted entry "New Element1" is now included in the System Structure list. Its text is also activated to be edited. Change the text to "Nonmagnet 1". Note how the listing of this new entry is indented relative to its parent group, indicating that it is of a lower level in the system hierarchy.

Fig. 4. System View window displaying first added element.

Let us now add a second element to the group in a different manner. Make sure the lone group is selected in the System-structure list, then right-click the mouse in this box. In the displayed popup menu select the item Add->Element. An Element specification dialog for the new component you are creating is displayed. Make the following data entries under the indicated tabs:

1. Geometry tab

In the frame Linear dimensions along coordinate axes (nm) , enter:

Length Lu = 200

Width Lv = 200

Thickness Lw = 700

In the frame Element Origin relative to previous component (nm) , enter:

U = 0

V = 0

W = 500

In the frame Angular orientation coordinates within group (Deg.) , enter:

Azimuthal = 45

Polar = 30

2. Electromagnetic tab

Magnet type : Select Non-Magnet from drop-down list

3. Data Output tab (Fig. 5)

Specify output for the element as follows: Create a new data set by pressing the New button. The created data set has default X and Y outputs of the type Iteration . The Iteration output is the iterative count during calculations; it acts as a ticker that measures the progress of the calculation. Other types of outputs may be defined. The outputs are organized by categories listed in the Data Category box. Selecting an item in this box lists its possible outputs in the Data type box. Select Electrical from the Data Category box, then select the item Current, I in the data type box. Make this the Y output by pressing the button located directly above the Y-Axis list (this button bears a wide arrow that points downwards). This data is the electrical current flowing through the element. Specifying the Y data can also be accomplished by double clicking the data in the Data type box. X data output is similarly specified by selecting an item in the Data type box and pressing the button located above the X-Axis list. We skip this step since Iteration is already defined by default. Additional data sets may be specified for the element in this way. Refer to the online help for a full description of the Data Output tab.

Fig. 5. Data Output tab.

Above specifications will create a new non-magnetic element having linear dimensions 200 x 200 x 700  nm and tilted in space according to the entered angular coordinates in step 1. This element is displaced 500 nm in the W -direction from the previously defined element (measured in the coordinate frame of the group). A graph of the electrical current passing through the element as a function of calculation iterations, will be plotted during a simulation.

Press the OK button to quit the Element Specification dialog and complete the creation of the new element. In the System Structure list change the name of the new element to "Nonmagnet 2."

The system-display pane now shows the two components of our first group (Fig. 6). Clicking once at a displayed element with the left mouse button selects it and its parent group. Handles in the form of little rectangles that appear at the corners of the element indicate this. Select any one of the elements. Notice that two sets of handles are displayed. Group handles (marking the extents of the parent group of the element) are displayed in white, while handles for the element are displayed in black.

Fig. 6. System view window displaying all components of the first group.

Before proceeding further let us save the design we have so far. To do this, select the menu item File->Save from the main program menu. You are prompted for the name of the file to save the design to. Enter a file name such as "TestDesign" or any other name of your choice and press Save . The design has now been saved to the specified file. If the entered file name has no extension, it is saved with the default extension . mus (for example as "TestDesign.mus"). It is always a good idea to periodically save your designs. After the design has been saved once, selecting File->Save again saves it to the previously entered file without prompting for a new file name. To save the design to a different file, select the File->Save As item from the menu. A saved design can be loaded into the program by selecting the File->Open menu item.